If you live in the states, the Pollinator Partnership has a website where you can get information about pollinator-friendly plants that will grow in your eco-region. Simply enter your zip code and you will be directed to a 24-page guide for your area. Each guide contains an overview of the planting region, a summary of the history and ecology of the area, and lists of plants that grow and attract pollinators in that region.
In addition, the .pdf document gives you background on pollinators in general, information about the types of flowers they prefer, pointers on attracting pollinators to your yard, and explanations about pollinator habitat and nesting requirements.
All this is free, so be sure to check it out at http://www.pollinator.org. And remember that Earth Day is this Thursday April 22. Celebrate by planting a pollinator-friendly plant and reap the benefits for years to come.